package com.hmdp.service.impl;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.hmdp.dto.Result;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.ListOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;

import static com.hmdp.utils.RedisConstants.CACHE_SHOP_TYPE;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {
    @Autowired
    private StringRedisTemplate redisTemplate;

    @Override
    public Result getTypeList() {
        String key = CACHE_SHOP_TYPE;
        ListOperations<String,String> listOps = redisTemplate.opsForList();
        if (listOps.size(CACHE_SHOP_TYPE) > 0){
            List<String> range = listOps.range(CACHE_SHOP_TYPE, 0, -1);
          String s = range.get(0);
            List<ShopType> shopTypes = JSONUtil.toList(s, ShopType.class);

            return Result.ok(shopTypes);
        }
        List<ShopType> shopTypes = query().orderByAsc("sort").list();
        listOps.leftPushAll(CACHE_SHOP_TYPE,JSONUtil.toJsonStr(shopTypes));

        return Result.ok(shopTypes);
//        return Result.fail("查询失败");
    }
}
